With a newly authorized COVID-19 vaccine being distributed in hospitals and nursing homes and a second vaccine on the horizon, the United States has entered a hopeful new phase in the coronavirus pandemic.But that hope is being tempered by the severity of the pandemic in the country, which reported new single-day highs in COVID-19 cases (247,403), hospitalizations (113,090), and deaths (3,656) yesterday, according to data from Johns Hopkins and the COVID Tracking Project.Though the virus has been spreading throughout the country and cases have been rising exponentially for months, the spike in new cases in recent weeks may be linked to travel and gatherings over the Thanksgiving holiday.